The STM slipper clutches are manufactured with advanced materials, the rider
can change settings by replacing primary and secondary springs. The primary spring is used to compress the disc pack, while the secondary is designed to control the engine brake.
can change settings by replacing primary and secondary springs. The primary spring is used to compress the disc pack, while the secondary is designed to control the engine brake.
In addition, installing an STM slipper clutch reduces wear on the clutch plates as they are cooled by jets of oil, an exclusive STM patent.